Share this entry

nannofossil Syllabification: nan·no·fos·sil
Pronunciation: /ˈnanōˌfäsəl/
(also nanofossil)

Definition of nannofossil in English:


The fossil of a minute planktonic organism, especially a calcareous unicellular alga.
Example sentences
  • This paper presents high-resolution data from calcareous nannofossils, planktic Foraminifera, palynomorphs and stable isotopes for the Late Albian OAE Id.
  • In the seas, the calcareous nannofossils were still in evidence but in shallow waters the benthonic nummulite and other larger foraminifera became very abundant.
  • The same samples as used for geochemistry were investigated for their content of calcareous nannofossils.


1960s: nanno- from nannoplankton (variant of nanoplankton) + fossil.

Definition of nannofossil in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources